Water Distribution Grade 1
Certification ADEQ Practice
Refined Test Latest
2025/2026 Graded A+
What is the general definition of an ion? An _________ with a positive or
negative charge - Correct Answers-Atom
A continuous positive pressure in a distribution system is essential for
preventing what event? - Correct Answers-Backflow Event
_____________ water pressure must be maintained to ensure adequate customer
service during peak flow periods. However, minimum positive pressure must be
maintained in mains to protect against backflow or backsiphonage from cross-
connections. - Correct Answers-Minimum
Name the most common CAUSE for public water supply contamination.
_________________ or cross-connection - Correct Answers-Backflow
What does a backsiphonage condition usually cause? __________ pressure or
negative pressure on the service or supply side. - Correct Answers-Reduced
What does a double check valve backflow assembly provide effective protection
from? Both backpressure and backsiphonage of ____________. - Correct
Answers-Pollution
What is equipment that utilizes water for cooling, lubrication, washing or as a
solvent always susceptible to? - Correct Answers-Cross-Connection
What is the difference between a reduced pressure principle backflow device
and a double check backflow device? The RP has a ______________. - Correct
Answers-Relief Valve
What is the maximum time period between having a backflow device tested by
a certified backflow tester? ______________ year. - Correct Answers-1
What is the regulatory definition of a cross-connection in a water supply? A
physical connection between a public water system and any source of water or
, other substance that may lead to contamination of the water provided by the
_____________ through backflow. - Correct Answers-PWS
What is the name of a type of valve that reduces the differential pressure
across a closed disk making the main valve easier to open and close? - Correct
Answers-Bypass Valve
As soon as Cl2 gas enters the throat area, a victim will sense a sudden
stricture in this area-Nature's way of signaling to prevent passage of the gas to
the lungs. At this point, the victim must attempt to do two things: get out of
the area of the leak, proceeding upwind, and to take only very short breaths
through the mouth. Normal breathing will cause __________, which must be
prevented if possible. - Correct Answers-Coughing
Chlorine gas causes suffocation, constriction of the chest, tightness in the
throat, and edema of the ______________. - Correct Answers-Lungs
_______________ available chlorine is very effective in killing bacteria. - Correct
Answers-Free
How should an operator store an empty chlorine cylinder? ____________, tagged
as empty. - Correct Answers-Upright
If a chlorine leak occurs, where will chlorine gas accumulate? Near the
____________ of the tank. - Correct Answers-Bottom
What effect does chlorine gas have on the sense of smell? It produces olfactory
_______________. - Correct Answers-Fatigue
What is the primary safety concern when using chlorine gas as opposed to
calcium hypochlorite or sodium hypochlorite? The potential for a _____________
leak. - Correct Answers-Gas
What may occur due to chronic exposure to low concentrations of chlorine gas?
Chronic exposure may cause corrosion of the _____________. - Correct Answers-
Teeth
What is the process called that changes water vapor to tiny droplets or ice
crystals? - Correct Answers-Condensation
What is the unit of measurement for sound? - Correct Answers-Decibels
What happens if grease comes in contact with the winding of a motor? -
Correct Answers-The winding insulation my deteriorate.
Certification ADEQ Practice
Refined Test Latest
2025/2026 Graded A+
What is the general definition of an ion? An _________ with a positive or
negative charge - Correct Answers-Atom
A continuous positive pressure in a distribution system is essential for
preventing what event? - Correct Answers-Backflow Event
_____________ water pressure must be maintained to ensure adequate customer
service during peak flow periods. However, minimum positive pressure must be
maintained in mains to protect against backflow or backsiphonage from cross-
connections. - Correct Answers-Minimum
Name the most common CAUSE for public water supply contamination.
_________________ or cross-connection - Correct Answers-Backflow
What does a backsiphonage condition usually cause? __________ pressure or
negative pressure on the service or supply side. - Correct Answers-Reduced
What does a double check valve backflow assembly provide effective protection
from? Both backpressure and backsiphonage of ____________. - Correct
Answers-Pollution
What is equipment that utilizes water for cooling, lubrication, washing or as a
solvent always susceptible to? - Correct Answers-Cross-Connection
What is the difference between a reduced pressure principle backflow device
and a double check backflow device? The RP has a ______________. - Correct
Answers-Relief Valve
What is the maximum time period between having a backflow device tested by
a certified backflow tester? ______________ year. - Correct Answers-1
What is the regulatory definition of a cross-connection in a water supply? A
physical connection between a public water system and any source of water or
, other substance that may lead to contamination of the water provided by the
_____________ through backflow. - Correct Answers-PWS
What is the name of a type of valve that reduces the differential pressure
across a closed disk making the main valve easier to open and close? - Correct
Answers-Bypass Valve
As soon as Cl2 gas enters the throat area, a victim will sense a sudden
stricture in this area-Nature's way of signaling to prevent passage of the gas to
the lungs. At this point, the victim must attempt to do two things: get out of
the area of the leak, proceeding upwind, and to take only very short breaths
through the mouth. Normal breathing will cause __________, which must be
prevented if possible. - Correct Answers-Coughing
Chlorine gas causes suffocation, constriction of the chest, tightness in the
throat, and edema of the ______________. - Correct Answers-Lungs
_______________ available chlorine is very effective in killing bacteria. - Correct
Answers-Free
How should an operator store an empty chlorine cylinder? ____________, tagged
as empty. - Correct Answers-Upright
If a chlorine leak occurs, where will chlorine gas accumulate? Near the
____________ of the tank. - Correct Answers-Bottom
What effect does chlorine gas have on the sense of smell? It produces olfactory
_______________. - Correct Answers-Fatigue
What is the primary safety concern when using chlorine gas as opposed to
calcium hypochlorite or sodium hypochlorite? The potential for a _____________
leak. - Correct Answers-Gas
What may occur due to chronic exposure to low concentrations of chlorine gas?
Chronic exposure may cause corrosion of the _____________. - Correct Answers-
Teeth
What is the process called that changes water vapor to tiny droplets or ice
crystals? - Correct Answers-Condensation
What is the unit of measurement for sound? - Correct Answers-Decibels
What happens if grease comes in contact with the winding of a motor? -
Correct Answers-The winding insulation my deteriorate.
